the GIII beat that
"True intercontinental flying range of 4,174 miles (6,717 kilometers) coupled with fuel-efficient winglets (which reduced drag) marked the introduction of the Gulfstream III in 1979. This trend in drag-reducing winglets was matched by the Learjet 55 Longhorn, also introduced in 1979, and continued by the more advanced Learjet 60, which made its debut in 1990."
Hawk